Thermo Scientific Nicolet FT-IR Manuale utente

The information in this publication is provided for reference only. All information contained in

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269-159402, Rev A

Contents

Introduction........................................................................................ 1

Questions and concerns ............................................................... 2

Conventions used in this manual................................................. 2

Safety precautions........................................................................ 3

TGA-IR Module components...................................................... 4

The front panel....................................................................... 5

The rear panel ........................................................................ 7

Using the TGA-IR Module................................................................ 9

Principles of operation................................................................. 9

Setting up the module ................................................................ 10

Connecting the purge line.................................................... 10

Connecting the transfer and exhaust gas lines..................... 12

Verifying the installation..................................................... 15

Setting the temperature........................................................ 16

Using the remote start option............................................... 16

Cooling the detector................................................................... 17

Operating tips............................................................................. 19

Maintenance..................................................................................... 21

Checking and replacing fuses .................................................... 22

Troubleshooting......................................................................... 26

Specifications............................................................................. 27

TGA-IR Module User’s Guide 1

Introduction

This manual explains the features and components of the Thermo

Scientific TGA-IR Module. For information on performing TGA-IR

experiments, see the OMNIC Series Help.

Before operating the TGA-IR Module, you should have a working

knowledge of Thermo Scientific OMNIC™Series software. You will

also need to know the fundamentals of thermogravimetric analysis

and the operating characteristics of your thermogravimetric analyzer.

Warning The Accessory Safety Guide that came with your system contains

important safety information. Make sure you read this guide, and

follow the safety precautions provided there and later in this chapter

whenever you use the TGA-IR Module. 

Questions

and concerns

In case of emergency, follow the procedures established by your

facility. If you have questions or concerns about safety or need

assistance with operation, repairs or replacement parts, you can

contact our sales or service representative in your area or use the

information at the beginning of this document to contact us.

Conventions

used in this manual

This manual includes safety precautions and other important

information presented in the following format:

Note Notes contain helpful supplementary information. 

Important Follow instructions labeled “Important” to avoid damaging the

system hardware or losing data. 

Caution Indicates a potentially hazardous situation which, if not avoided,

may result in minor or moderate injury. It may also be used to alert

against unsafe practices. 

Warning Indicates a potentially hazardous situation which, if not avoided,

could result in death or serious injury. 

Danger Indicates an imminently hazardous situation which, if not avoided,

will result in death or serious injury. 

2 Thermo Fisher Scientific

Safety precautions Before you use the TGA-IR Module, make sure you read the

following safety precautions and both the Spectrometer Safety Guide

and the Accessory Safety Guide that came with your system. To help

prevent personal injury or equipment damage, follow all safety

precautions whenever you use the TGA-IR Module.

Warning The gas cell and the transfer line reach very high temperatures when

in use. To help avoid a severe burn or fire hazard, do not allow any

flammable object or part of the body to come into contact with the

gas cell or transfer line when they are in use. Use particular care

when working around surfaces marked with the following symbol:

Surfaces that are marked with this symbol range in temperature from

35 °C (95 °F) to 200 °C (400 °F) and can cause burns.

Warning To avoid a shock and fire hazard, do not allow water or other liquids

to come into contact with the internal components, and never attempt

to access the internal components of the TGA-IR Module. 

TGA-IR Module User’s Guide 3

TGA-IR

Module components

The TGA-IR Module and its internal components are shown in the

following illustrations.

Gas cell

Transfer line

Mirror

Exhaust

gas line

Detector

Mirror

Electronics box

4 Thermo Fisher Scientific

The front panel The four indicator lights on the front panel of the TGA-IR Module

show the current status of the system.

TGA-IR Module User’s Guide 5

The table below describes the function of each indicator light on the

front panel:

Indicator Function

Power This indicator is lit whenever the module power

is on. The power switch is on the rear panel.

(See the illustration in the next section.)

Transfer Line This indicator is lit when the transfer line is

being heated. When the temperature of the

transfer line is close to the setpoint, the indicator

cycles on and off.

Cell This indicator is lit when the gas cell is being

heated. When the temperature of the cell is close

to the setpoint, the indicator cycles on and off.

Alarm This indicator is lit when an alarm condition

occurs. The system responds by shutting off the

heater power. Alarm conditions can be caused by

an open thermocouple, the temperature of the gas

cell or transfer line being too high, or a

malfunctioning heater. If an alarm condition

occurs, turn the module power off and then

contact Technical Support for assistance.

Warning To avoid burn hazard, turn off the module power whenever the

alarm indicator lights. Allow the transfer lines and gas cell to cool

before you turn on the power to the module again. 

6 Thermo Fisher Scientific

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